National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

San Antonio, San Antonio International Airport (KSAT)

Lat: 29.53°NLon: 98.46°WElev: 807ft.

A Few Clouds

97°F

36°C

Humidity 39%
Wind Speed S 12 G 22 mph
Barometer 29.96 in (1012.3 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 13 Aug 1:51 pm CDT
Extended Forecast for

San Antonio International Airport TX

  • This Afternoon

    This Afternoon: Sunny and hot, with a high near 101. Heat index values as high as 106. South southeast wind around 15 mph, with gusts as high as 20 mph.

    High: 101 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 78. Southeast wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 78 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 98. Heat index values as high as 106. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 98 °F

    Partly Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 78. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 78 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 99. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 99 °F

    Hot

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 75. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 98. South wind around 5 mph.

    High: 98 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 76. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny and hot, with a high near 99. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 99 °F

    Hot

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 101. Heat index values as high as 106. South southeast wind around 15 mph, with gusts as high as 20 mph.
Tonight
Partly cloudy, with a low around 78. Southeast wind 10 to 15 mph, with gusts as high as 30 mph.
Friday
Partly sunny, with a high near 98. Heat index values as high as 106. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Increasing clouds, with a low around 78. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday
Mostly sunny and hot, with a high near 99. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 75. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 98. South wind around 5 mph.
Sunday Night
Mostly clear, with a low around 76. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Mostly sunny and hot, with a high near 99. Calm wind becoming south southeast around 5 mph in the afternoon.
Monday Night
Clear, with a low around 77.
Tuesday
Sunny and hot, with a high near 99.
Tuesday Night
Clear, with a low around 78.
Wednesday
Sunny and hot, with a high near 100.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio International Airport TX
 29.53°N 98.48°W (Elev. 817 ft)
Last Update:
1:56 pm CDT Aug 13, 2026
Forecast Valid:
2pm CDT Aug 13, 2026-6pm CDT Aug 19, 2026
 
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